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Tohatsu four stroke outboard engines above 50 HP sold in North America after 2013 are rebadged Honda, though at some point after that Tohatsu introduced their own 60 HP model which is an up-rated variant of their 40/50 HP engine. As of at least 2022 all outboards up to 60 HP are designed and built by Tohatsu. [14]
Yamaha developed a number of naturally-aspirated racing engines during their time in Formula One; between 1989 and 1997. They initially supplied engines for the Zakspeed team, in 1991 for the Brabham BT60Y, in 1992 for the Jordan 192, from 1993 to 1996 for Tyrrell, and in 1997 for the Arrows A18.
New engine manufacturers entered Formula One (such as Ilmor, Judd and Yamaha), and new ideas broke through. Ferrari and Lamborghini used V12 engines (successfully in the former's case), Carlo Chiti 's Motori Moderni unsuccessfully tried to revive flat-12 engines, badged as Subarus and used by the Coloni team, whilst Renault and Honda developed ...
The Daihatsu J-series engine is a series of inline-four engines, which was fitted with a twin scroll turbo and intercooler in the Copen, that was specially developed for Daihatsu's kei cars in combination with Yamaha. It was produced from August 1994 to August 2012.
The M4+2 engine, also known as the double-piston internal combustion engine, is a type of internal combustion engine invented by Polish patent holder Piotr Mężyk. [1] The M4+2 engine took its name from a combination of two-stroke engines and four-stroke engines. The two-stroke combustion engine is characterized by a simple construction and ...
Yamaha adopted the 5-valve concept, using three intake valves and two exhaust valves per cylinder, because it allowed both excellent volumetric efficiency and high RPM. As designers began to appreciate the benefits of multi-valve layout, 4-valves-per-cylinder (and even 3-valves) became common.
A stroke is the action of a piston travelling the full length of its cylinder.In a two-stroke engine, one of the two strokes combines primarily the intake stroke and the combustion stroke, while the other stroke primarily combines the compression stroke and the exhaust stroke, though technically since both ports are exposed during both the combustion and compression strokes, some reversion ...
A six-stroke engine is one of several alternative internal combustion engine designs that attempt to improve on traditional two-stroke and four-stroke engines. Claimed advantages may include increased fuel efficiency , reduced mechanical complexity, and/or reduced emissions .